ICL7660

PRODUCTION

Switched-Capacitor Voltage Converters

20mA Charge Pump with Industry Standard Pinout

Data Sheet (Rev. 3) Product Selection Table
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Overview

  • Miniature µMAX Package
  • 1.5V to 10.0V Operating Supply Voltage Range
  • 98% Typical Power-Conversion Efficiency
  • Invert, Double, Divide, or Multiply Input Voltages
  • BOOST Pin Increases Switching Frequencies (MAX1044)
  • No-Load Supply Current: 200µA Max at 5V
  • No External Diode Required for Higher-Voltage Operation

The MAX1044 and ICL7660 are monolithic, CMOS switched-capacitor voltage converters that invert, double, divide, or multiply a positive input voltage. They are pin compatible with the industry-standard ICL7660 and LTC1044. Operation is guaranteed from 1.5V to 10V with no external diode over the full temperature range. They deliver 10mA with a 0.5V output drop. The MAX1044 has a BOOST pin that raises the oscillator frequency above the audio band and reduces external capacitor size requirements.

The MAX1044/ICL7660 combine low quiescent current and high efficiency. Oscillator control circuitry and four power MOSFET switches are included on-chip. Applications include generating a -5V supply from a +5V logic supply to power analog circuitry. For applications requiring more power, the MAX660 delivers up to 100mA with a voltage drop of less than 0.65V.

Applications

  • -5V Supply from +5V Logic Supply
  • Data Acquisition
  • EIA/TIA-232E and EIA/TIA-562 Power Supplies
  • Handheld Instruments (PDAs, Palmtops)
  • Op-Amp Power Supplies
  • Panel Meters
  • Personal Communications Equipment
  • Portable Telephones
ICL7660
Switched-Capacitor Voltage Converters
ICL7660, MAX1044: Typical Operating Circuit
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Documentation

Data Sheet 2

Reliability Data 1

Design Note 1

Technical Articles 2

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Software Resources

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Hardware Ecosystem

Parts Product Life Cycle Description
Charge Pumps 1
MAX828
PRODUCTION Switched-Capacitor Voltage Inverters
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